Rotary drum pump



FIG. 1 is a perspective view of a rotary drum pump showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an alternate perspective view thereof showing my new design in an exemplary environment.

The broken lines showing of pipe, hose, and fitting in FIG. 8 illustrate the environment of the claimed design and form no part thereof.

The broken lines are included for the purpose of illustrating portions of the rotary drum pump that form no part of the claimed design. 

CLAIM The ornamental design for a rotary drum pump, as shown and described. 